mask (someone's) identity

Переводы
скрывать (чью-то) личность
The hacker masked his identity to avoid detection.
Хакер скрыл свою личность, чтобы избежать обнаружения.
Определения
To conceal or obscure a person's true identity, often by using disguises, false information, or other means to prevent others from recognizing or knowing who they are.